<template>
	<div class="login-container">
		<el-form
		ref="loginForm"
		:model="loginForm"
		:rules="loginRules"
		class="login-form"
		auto-complete="on"
		label-position="left"
		>
			<div class="title-container">
				<h3 class="title">Login Admin</h3>
			</div>

			<el-form-item prop="username">
				<span class="svg-container">
				<svg-icon icon-class="user" />
				</span>
				<el-input
				ref="username"
				v-model="loginForm.username"
				placeholder="Username"
				name="username"
				type="text"
				tabindex="1"
				auto-complete="on"
				/>
			</el-form-item>

			<el-form-item prop="password">
				<span class="svg-container">
				<svg-icon icon-class="password" />
				</span>
				<el-input
				:key="passwordType"
				ref="password"
				v-model="loginForm.password"
				:type="passwordType"
				placeholder="Password"
				name="password"
				tabindex="2"
				auto-complete="on"
				@keyup.enter.native="handleLogin"
				/>
				<span class="show-pwd" @click="showPwd">
				<svg-icon
					:icon-class="passwordType === 'password' ? 'eye' : 'eye-open'"
				/>
				</span>
			</el-form-item>

			<el-button
				:loading="loading"
				type="primary"
				style="width: 100%; margin-bottom: 30px"
				@click.native.prevent="handleLogin"
				>Login</el-button
			>
		</el-form>
	</div>
</template>

<script>
import { validUsername } from "@/utils/validate";

export default {
	name: "Login",
	data() {
		const validateUsername = (rule, value, callback) => {
			if (!validUsername(value)) {
				callback(new Error("Please enter the correct user name"));
			} else {
				callback();
			}
		};
		const validatePassword = (rule, value, callback) => {
			if (value.length < 6) {
				callback(new Error("The password can not be less than 6 digits"));
			} else {
				callback();
			}
		};
		return {
			loginForm: {
				username: "",
				password: "",
			},
			loginRules: {
				username: [
					{ required: true, trigger: "blur", validator: validateUsername },
				],
				password: [
					{ required: true, trigger: "blur", validator: validatePassword },
				],
			},
			loading: false,
			passwordType: "password",
			redirect: undefined,
		};
	},
	watch: {
		$route: {
			handler: function (route) {
				this.redirect = route.query && route.query.redirect;
			},
			immediate: true,
		},
	},
	methods: {
		showPwd() {
			if (this.passwordType === "password") {
				this.passwordType = "";
			} else {
				this.passwordType = "password";
			}
			this.$nextTick(() => {
				this.$refs.password.focus();
			});
		},
		handleLogin() {
			this.$refs.loginForm.validate((valid) => {
				if (valid) {
					this.loading = true;
					this.$store.dispatch("user/login", this.loginForm).then(() => {
						this.$router.push({ path: this.redirect || "/" });
						this.loading = false;
					}).catch(() => {
						this.loading = false;
					});
				} else {
					console.log("error submit!!");
					return false;
				}
			});
		},
	},
};
</script>

<style lang="scss">

$bg: #283443;
$light_gray: #fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
	.login-container .el-input input {
		color: $cursor;
	}
}

/* reset element-ui css */
.login-container {
	.el-input {
		display: inline-block;
		height: 47px;
		width: 85%;

		input {
			background: transparent;
			border: 0px;
			-webkit-appearance: none;
			border-radius: 0px;
			padding: 12px 5px 12px 15px;
			color: $light_gray;
			height: 47px;
			caret-color: $cursor;

			&:-webkit-autofill {
				box-shadow: 0 0 0px 1000px $bg inset !important;
				-webkit-text-fill-color: $cursor !important;
			}
		}
	}

	.el-form-item {
		border: 1px solid rgba(255, 255, 255, 0.1);
		background: rgba(0, 0, 0, 0.1);
		border-radius: 5px;
		color: #454545;
	}
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
	min-height: 100%;
	width: 100%;
	background-color: $bg;
	overflow: hidden;

	.login-form {
		position: relative;
		width: 520px;
		max-width: 100%;
		padding: 160px 35px 0;
		margin: 0 auto;
		overflow: hidden;
	}

	.tips {
		font-size: 14px;
		color: #fff;
		margin-bottom: 10px;

		span {
		&:first-of-type {
			margin-right: 16px;
		}
		}
	}

	.svg-container {
		padding: 6px 5px 6px 15px;
		color: $dark_gray;
		vertical-align: middle;
		width: 30px;
		display: inline-block;
	}

	.title-container {
		position: relative;

		.title {
		font-size: 26px;
		color: $light_gray;
		margin: 0px auto 40px auto;
		text-align: center;
		font-weight: bold;
		}
	}

	.show-pwd {
		position: absolute;
		right: 10px;
		top: 7px;
		font-size: 16px;
		color: $dark_gray;
		cursor: pointer;
		user-select: none;
	}
}
</style>
